Bî-bí sī niû tn̂g-té iōng--ê SI tan-ūi, hû-hō siá chò µm (µ sī hui-chèng-sek ê siá-hoat). I ê tēng-gī sī 1 (kong-chhioh) ê 1-pah-bān-hun chi it (1×10−6 m).

micrometre
A 6 μm diameter carbon filament above a 50 μm diameter human hair
Tan-ūi chu-sìn
Tan-ūi hē-thóng SI
Bu̍t-lí-liōng length
Hû-hō μm 
Unit conversions
1 μm in ...... is equal to ...
   SI base units    10−6 m
   Natural units    1.8897×104 a0
   imperial/US units    3.9370×10−5 in